Web: You can maintain a good habit by charting a success streak. We've talked about this before, known more commonly as the "Don't Break the Chain" Method. Bania.io helps you log this streak with nothing more than a daily email.

It's simple. Suppose you want to create a streak for going to the gym every day. On the day you go, you send an email to WentToGym@Bania.io. That's it. No sign-ups needed. In a few minutes, Bania.io will reply with a monthly breakdown of your productivity chain, with shades of green marking how good you have been.

Of course, you can use any prefix instead of "WentToGym" and use multiple ones too. You probably want to keep it short and easy to remember, so gym@bania.io is the way to go. The service is free and secure. It's gold, Jerry, gold!